Xenoarchaeology can be defined is the scientific study of the material remains of past extraterrestrial life activities, as well as the scientific study of what those remains reveal about them and their culture. It has also been called exo-archaeology. Alternative spellings like xenoarcheology and exo-archeology are commonly found.

It studies and interprets the following categories of evidence:

In its initial stages, it may also make use of more exotic secondary sources of evidence like Remote Viewing, stories that contactees have been told, as well as channeling.

 Source: Adapted from: Manuel Lamiroy, Introduction to Xenology, 2020.